Foliar Garden

Companion Planting for Onions And Garlic

Companion planting is an age-old method of gardening where plants are grown next to each other for mutual benefit. Onions and garlic are excellent companions in the garden, as they help repel pests, improve yield, and provide a variety of nutrients to the soil. When planted together they can help protect each other from diseases such as onion maggot and also add flavor when used in cooking.

Garlic helps deter aphidsfrom attacking onions while onions help keep slugs away from garlic plants. Both crops thrive best when planted with carrots or lettuce which act as natural pest repellents due to their strong scent. Additionally, both Alliums (onions &garlic) enrich the soils by adding nitrogen into it making them great companion plants for many other vegetables like tomatoes, peppers and beets.

Planting these two herbs together not only increases yield but also adds flavor to food!

Companion planting is a great way to maximize your garden’s potential and get the most out of your vegetables. Onions and garlic are two of the best companion plants for many different types of vegetables as they provide natural pest control, improve soil fertility, attract beneficial insects, and aid in overall plant health. Planting onions or garlic near carrots can help repel carrot flies, while planting them with lettuce can prevent slugs from attacking it.

Additionally, these two powerful alliums also act as a natural fertilizer when their leaves are chopped up and added to the soil. With so much to offer other plants in the garden, companion planting onions and garlic is an easy way to ensure that you get optimum yields from each vegetable crop!

Companion Planting for Onions And Garlic


What Should Not Be Planted Next to Onions?

Onions are a hardy vegetable, but there is one thing that should not be planted next to them: garlic. Garlic can stunt the growth of onions and cause them to produce fewer bulbs. Additionally, both plants attract the same pests, so planting them together will only increase your chances of encountering an infestation.

Planting other alliums like leeks or shallots near onions is also not recommended as they can spread diseases between each other. To maximize onion yields, it’s best to plant them in a location where they won’t come into contact with any members of the allium family at all!

Can Onions And Garlic Be Planted Together?

Yes, onions and garlic can be planted together. Although they are both members of the Allium family, they do not compete with each other for nutrients or space in the soil. Additionally, planting them together has been shown to have beneficial effects on their growth; onions seem to benefit from the increased soil fertility brought about by growing garlic nearby, resulting in larger bulbs at harvest time.

As a bonus, having both plants close by also makes harvesting easier – you won’t need to search around for either one!

What Should Not Be Planted near Garlic?

When planting garlic, it is important to take into account what other plants should not be planted near it. Garlic does not particularly like direct competition from other vegetables and herbs, so it is best to avoid planting them too close together. The most common offenders for competing with garlic are onions, shallots and leeks.

These plants tend to have similar nutrient needs as garlic and can crowd out the area around the bulbs when grown too closely together. Additionally, tomatoes should also be avoided when growing garlic since they require a different type of soil than that which garlic prefers.

Can You Plant Onions And Garlic in the Same Area?

Yes, you can plant onions and garlic in the same area. Onions and garlic are both members of the Allium family, so they share similar growing requirements such as full sun and well-drained soil. Plant them at least six inches apart to allow for adequate air circulation around each bulb.

Make sure that when planting your onions and garlic, you’re using a quality organic fertilizer to ensure that your plants get all the nutrients they need. Additionally, rotate where you plant your Alliums every season to help prevent disease damage or infestation by pests like onion maggots or aphids which can be attracted by certain areas of the garden if planted in the same spot year after year.

Companion planting with garlic and onions

Bad Companion Plants for Onions

Onions need plenty of space to grow and companion plants that are too aggressive or tall can block out the sun and reduce air circulation, both of which can cause onions to rot. As a result, it is best to avoid planting beans, peas, corn, tomatoes and peppers near onions as these vegetables tend to take up a lot of space in the garden. Additionally, garlic should also be avoided when growing onions because they can compete for nutrients and moisture in the soil.

Best And Worst Companion Plants for Onions

Onions are a popular vegetable that can be grown in most home gardens. While onions have many benefits as companion plants, there are some plants that should not be planted near them. Carrots and leeks are the best companions for onions – they help to repel pests and improve the flavor of the onion bulbs.

On the other hand, beans, peas, and garlic should all be avoided when planting onions due to their strong scent which can cause overcrowding in the garden space.

Garlic Companion Plants

Garlic is a great companion plant for many different vegetables and herbs. Some of the best companions for garlic are beans, peas, chives, leeks, onions, peppers, rosemary and tomatoes. Planting garlic near these crops can help to improve both their flavor and yield as well as deter pests from attacking them.

Be sure to keep an eye out for other plants that could be competing with your garlic’s nutrients such as potatoes or brassicas like cabbage and broccoli.

Bad Companion Plants for Garlic

Garlic has a strong taste and aroma, so it is important to be careful when selecting companion plants that won’t overpower or adversely affect its growth. Plants to avoid planting near garlic include beans, peas, parsley, sage and fennel as these can inhibit the growth of your garlic crop. Additionally, alliums such as onions and shallots should not be planted in close proximity to garlic as they will compete for soil nutrients.

Green Onion Companion Plants

Green onions are a versatile vegetable that can be used in many dishes and make for a great addition to any garden. When planting green onions, it is important to consider what companion plants will work well with them. Radishes, beets, carrots and lettuce are all good choices as they have similar soil needs and help each other by attracting beneficial insects.

Additionally, oregano and tarragon both provide an aromatic scent that helps keep pests away from the green onion bed.

Can You Plant Onions And Garlic Together

Yes, you can plant onions and garlic together. Both vegetables are part of the Allium family and have similar growing requirements, such as abundant sunlight and well-drained soil. Planting them together also helps to ward off pests since both plants produce strong scents that insects don’t like.

Additionally, planting onions and garlic close together can make harvesting easier since their root systems won’t compete for nutrients or space in the soil.

Tomato Companion Plants

Tomatoes are a popular garden vegetable, and planting them alongside certain companion plants can help to maximize their growth and production. Some of the best companion plants for tomatoes include basil, marigolds, onions, parsley, carrots, and nasturtiums. These companions provide numerous benefits including pest control, increased soil fertility and improved flavor of the tomato fruits.

Additionally, some may even attract beneficial insects that will keep pests away from your tomatoes.


Overall, companion planting for onions and garlic is a great way to ensure that future harvests are successful. Not only can you benefit from the improved growth rate of the plantings, but the pest-repelling capabilities of certain plants will help you keep your crops safe from damage. By making sure your onion and garlic companions are compatible with each other, you can enjoy an abundant harvest season after season.